Background: One of the major causes of increasing nosocomial infections is misusing disinfectants and antiseptics in hospitals. The aim of this study was to evaluate the efficacy of disinfectants and antiseptics using in injections and dressing wards, operation rooms and kitchen of Hamedan hospitals. Materials and Methods: In this study 742 samples were collected before and after disinfect...

We report on the reliability of commercial UV-C (UltraViolet-C) LEDs (Light Emitting Diodes) subjected to constant current stress. Electrical, optical and spectral analysis was carried out with an emission peak 275 nm a nominal power 12 mW at 100 mA. Degradation tests were maximum rated current, double three times maximum. The LED lifetime found be inversely proportional third stress density, i...

A boron-doped diamond (BDD) electrode was constructed as a water disinfector for the inactivation of water borne pathogens. The bactericidal effect of the disinfector was evaluated on artificially contaminated waters containing, respectively, Escherichia coli, Pseudomonas aeruginosa and Legionella pneumophila at high density. By treating the bacterial suspensions with 4 V of constant voltage be...

This paper studies the worldwide applicability of solar water disinfection (SODIS) technology through a novel parameter: SODIS potential. parameter is defined as inverse ratio between required exposure time to achieve four log E. coli and six hours recommended by standard protocol. The inactivation kinetics was predicted fitting results under different temperature incident radiation semi-empiri...

Photocatalysis, a unique process that occurs in the presence of light radiation, can potentially be utilized to control environmental pollution, and improve health society. Photocatalytic removal, or disinfection, chemical biological species has been known for decades; however, its extension indoor environments public places always challenging. Many efforts have made this direction last two–thr...

OBJECTIVE The aim of this study was to evaluate the effect of repeated microwave disinfections on the dimensional stability of acrylic dentures. MATERIALS AND METHODS Three groups of dentures made of a heat polymerized acrylic resin were tested. I: dentures kept in water (control group). II: dentures microwaved daily while being immersed into water (wet disinfection). III: dentures microwaved...

This study was conducted to investigate Serratia liquefaciens infection in juvenile cultured rainbow trout (Oncorhynchus mykiss Walbaum) during June and July in 1996 about 20 days after flooding in three farms in Erzurum. Bacterial isolates were identified from each farm and tested to determine sensitivity against 18 chemotherapeutants. In addition to minimum bactericidal concentrations (MBC) o...